Rolling mill



March 13, 1928.

1,662,332 J D. PUGH ROLLING MILL Filed Nov. 1'7. 1924 2 Sheets-Sheet 1 March13, 1928.

J. D. PUGH ROLLING MILL Filed Nov. 17. 1924 2 Sheets-Sheet 2 Patented Mar. 13, 1928. p

um'rsn STATES 1,662,332 PATENT oFF cE.

JOKIV D. PUGH, OF BALTIMORE, MARYLAND.

. ROLLING MILL.

Application filed November -17, 1924. Serial No. 750,454.

The present invention relates to rolling mills and to processes for rolling flanged sections.

Inmy prior applications, now pending,

Ser. Nos. 327,870 and 498,27 6, filed October 2, 1919, and September 3, 1921, respectively, are disclosed rolling mills of the threehigh type for rollin flanged sections in which means is provi ed for rolling all Did the surfaces of the beam or other sections at each pass therethrough except one pair of flange edges. In the succeeding pass this pair of edges is rolled but the opposite pair of edges is not rolled the opposite pairs of edges being according to that process rolled alternately. The present invention is an improvement upon the inventions disclosed in the two applications above mentioned and contemplates certain changes in the details of the rolls of the three-high mill whereby a mill is provided by means of which beams may be easily rolled, which will have, when completed, no objectionable corner beads and which will be of superior texture throughout v In the accompanying drawings two modifications of the invention are illustrated which disclosure is sufficient to enable one skilled in the art to practice the invention.

As will be understood however, the invention is susceptible of still further modification and may be embodied in other alternative forms if found desirable or expedient. In Fig. 1 areillustrated the rolls of a three-high mill embodying the invention, the

side frames of the mill roll adjusting mechanism and other details being omitted for the sake of clearness.

- Fig. 2 is an end elevation of the middle {i211 showing two of the side rolls in dotted es; Fig. 3 is a view similar to Figure 1 but showing one contemplated modi cation of the rolls; and

Fig. 4 isa top plan view of the middle horizontal roll and associated side rolls 7 shown in Figure 3, part of the middle roll and a portion of one side roll being broken away. v

The to and bottom rolls 10 and 11 of the form of t e invention shown in Figure 1 are shown to be similar and substantially cylindrical in shape with slightly inclined side faces 10 and 11' respectively. The middle roll 12 has acylindrical rolling face and two inclined side rolling faces 12'. This roll has inaddition, however, collars13 with cylindrical faces, one collar on each side thereof Just outside of collars-13 and concentric with the. main rolling surfaces are formed grooves 14 in the sides of the roll, the inner walls of these grooves forming contin-uations of the cylindrical faces of collars 13. Side or vertical rollers are indicated at 15 andeach of these vertical rollers is provided, at 05 the end adjacent the middle roll, with a flange or collar 15 which enters, for a short distance, the corresponding groove 14 in roll 12. These flanges 15' constitute edging collars.

An H beam is indicated at'16,- this beam being shown in section and in the position which it occupies when passing through the upper pass of the mill. It will be seen that all of the surfaces of the beam are in contact with rolling faces of the mill with the exception of the upper edges of the flanges. The lower edges of the flanges are in contact with edging collars 15. These edging collars are formed with bevelled or roundso" ed edges 15 so that they make free entries into the grooves 14.

In passing throu 11 the mill the inside lower edges of the anges will have a tenden'cy to enter grooves 14 above edgingcols5" lars 15 but this tendency will be slight, the crescent shaped openings above collars 15 being small in extent and furthermore any protuberance being momentarilyformed by rojection of such material into these openings being immediately removed upon fur-' ther movement of the beam by the side faces 12 beyond the center line of the mill in direction of movement ,ofthe beam.

It is to be noted that the side rolls 15 are of such height that the upper edges of the beam do not at any timeproject therebe- 0nd. By the construction shown therefore,

1t is apparent that a method of rolling flanged sections is rovided in which the forno for the purposes of ilin the mill, but that a single d" to completion by successive passes alternately, and then a second beam is rolled, and so on. The rolls, both vertical and horizontal may be adjusted between passes by any well-known mechanism although I prefer to employ the adjusting mechanism disclosed in my pending applications.

In the form of the invention shown in Fig. 3 the middle roll 20 is formed exactly as in the first form of the invention just described and the side rolls 21 are the same as in the first form of the invention except in that they are shorter, being of such height as to allow the upper edges of the flanges of beam 22 to project beyond the same in the upper pass and the lower edges of the flanges to project below the same in the lower pass. The top and bottom rolls 23 and'24 are provided with edging collars 25 and 26 respectively which bear against the opposite edges of the beam. A slight space between these edging collars and the adjacent faces of the side rolls 21 allow flow of the metal laterally and the formation of beads in well-known manner in the normal rolling operation.

Thus in the upper pass of the mill beads may form, due to flow of the metal, on the outsides of the upper edges. As the beam passes through the lower pass, however, these beads will be removed but, of course, additional beads can be formed at the lower edges of the beam. In the final pass of the beam through the mill the rolls are not adjusted, so that the bead previously formed is removed without the formation of a new or additional bead. The finished beam will therefore have no head whatever.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:

aeoassa in combination, a roll having a cylindrical rolling surface for the web of a beam, an annular surface disposed transverse thereto for rolling the inside of a flan e, and an annular groove concentric with t e roll and formed in the end thereof within the annular rolling surface, of a second roll having a rolling surface transverse to the cylindrical surface of the first roll and an annular flange on said second roll which enters the groove in said first roll, the arrangement being such that the said annular flange of the second roll projects within the annular groove of the first roll and engages and extends beyond the edge of the beam flange throughout a series of successive passes as the beam is being reduced, thereby preventing the formation of a head during such passes.

2. In a rolling mill, in combination, parallel horizontally disposed rolls having cooperating cylindrical rolling surfaces for the web of a flanged section and transverse annular side surfaces for the insides of the flanges, one of said rolls being provided with an annular groove in each end thereof within the annular rolling surface at that end, and concentric with the cylindrical rolling surface, and side rolls for the outer surfaces of the beam flanges having annular flanges extending into said annular grooves, the arrangement being such that the said annular flange of the second roll rejects within the annular groove of the rst roll and engages and extends beyond the edge of the beam flange throughout a series of successive passes as the beam is being reduced, thereby preventing the formation of a bead during such passes.

In testimony whereof I hereunto afiix my signature.

JOHN D. PUGH. 

